From: dblack@...
Date: 2006-01-07T13:10:04+09:00
Subject: Re: Oniguruma lookbehind question

Hi --

On Sat, 7 Jan 2006, Xavier Noria wrote:

> On Jan 7, 2006, at 3:56, dblack@wobblini.net wrote:
>
>>  # Now, do the same thing *or* \S+.  This should, I think,
>>  # pick up the abc, def, and mno substrings too.
>>
>>  re2 = /((?<=")[^"]+(?="))|(\S+)/
>>
>>  # But it doesn't; the part before the alternation never
>>  # matches,
>
> It shouldn't, since pattern-matching goes left-to-right \S will match the 
> quote before the first half of the regexp gets a chance, since it wants to 
> match the first character _after_ the quote.

OK, I see.  I was somehow discounting the fact that the first "
*itself* doesn't match the left-hand alternate.

Thanks --


David

-- 
David A. Black
dblack@wobblini.net

"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black